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The most important component of conservation technological systems, as in the case of conventional ones, is soil tillage--loosening and processing--and the introduction of seed into the soil. Conservative systems are based on the less intense loosening of soil, made by different methods, without furrow return and only while maintaining a given amount of crop residues on soil surface, is being considered for this reason as environmental protection strategies. In this paper are presented conservative tillage technologies use in our country and in the world. [ABSTRACT FROM AUTHOR]

Conservative systems are based on the less intense loosening of soil, made by different methods, without furrow return and only while maintaining a given amount of crop residues on soil surface, is being considered for this reason as environmental protection strategies. In this paper is presented an analysis of the state of research on the implementation in agriculture of conservative tillage technologies and the technical-economic and environmental impacts of applying these conservative technologies. Also, there are presented the most advanced research on optimal construction of equipment for soil processing in conservation system. [ABSTRACT FROM AUTHOR]